Segment screw for twin compounding extruder. dia25-133mm,Kinds of single key, head Spline, Hexagon, Involute Spline ect. Segment barrel ... for the twin compounding extruder. Φ25-Φ133mmKinds of single key, head Spline, Hexagon, Involute Spline ect.,The building ... . Such design makes it possible to process several kinds of materials with one screw.Base material 38CrMoAlA, Welded inlay ...